Decent presentation on using 5 of the most commonly used Design Patterns in an ASP.NET MVC project.  The patterns covered are: Singleton, Strategy, Repository, Proxy, Command and Factory.  After explaining and showing sample code for each of the 5 patterns, the presenter walks through a fork of the MVCMusic sample application to show where each pattern could be used to make the code more readable, structured, testable and/or easily modified.  Sample code and presentation slides are on the presenter's website: http://ardalis.com/aspconf-2012-sessions